It was the only word I could think of that might have some connection to the clue, but nothing to do with the first part as far as I can find. (so doubtful that I used 5 ?s)
You are kind, Bibblebub, thank you......I had wondered if it might be oasis...I have a vague remembrance of some group in the Algerian War which might have had an acronym oas, but can't find any refernce to it. Thank you again.